[FieldTrip] reading .mat in fieldtrip

Arjen Stolk a.stolk8 at gmail.com
Thu Aug 11 19:27:00 CEST 2016


You will no longer need to specify cfg.dataset once the data is already
read into the matlab environment. Try, for instance,

cfg = [];
cfg.demean = 'yes';
preproc = ft_preprocessing(cfg, data);

2016-08-11 10:15 GMT-07:00 Bahareh Elahian (belahian) <belahian at memphis.edu>
:

> I tried all these options before.
>
> The problem with ft_preprossecing is with cfg.dataset: I gave it my data's
> file name and path but the error is related to header and it says
> "unsupported header format"!
> And to use ft_predefintrial I need to creat Cfg apart of data that I do
> not have have anything at this time to include in Cfg.
>
> Thanks for your help!
>
> Bahar
>
>
> On Aug 11, 2016, at 12:00 PM, Arjen Stolk <a.stolk8 at gmail.com> wrote:
>
> You could try to make one long trial, and take it from there. Load that
> matrix stored in your mat file (type 'help load'), and then
>
> data.trial{1,1} = matrix;
> data.time{1,1} = 1:size(matrix,2);
> data.label{1,1} = 'chan 1';
> data.label{2,1} =  'chan 2';
> ..
> data.label{8,1} =  'chan 8';
>
> See that page, and/or type 'help ft_datatype_raw'. When your data is in
> raw format, you can process it with ft_preprocessing (e.g. to filter) or
> ft_redefinetrial (to create trials).
>
> Hope that gets you on your way,
> Arjen
>
>
>
>
> 2016-08-11 9:44 GMT-07:00 Bahareh Elahian (belahian) <belahian at memphis.edu
> >:
>
>> Thanks for the answer,
>>
>> I have had a look on this page before and I tried to follow the steps.
>> The problem is ;I do not have any cfg to define cfg.trl and use newdata
>> = ft_redefinetrial(cfg,data);
>>
>> Any other idea?
>>
>>
>>
>> On Aug 11, 2016, at 11:36 AM, Arjen Stolk <a.stolk8 at gmail.com> wrote:
>>
>> Hi Bahareh,
>>
>> To get you started, see this page:
>> http://www.fieldtriptoolbox.org/faq/how_can_i_import_my_own_dataformat
>>
>> It describes what fieldtrip expects your raw data to look like.
>>
>> Arjen
>>
>> 2016-08-11 8:42 GMT-07:00 Bahareh Elahian (belahian) <
>> belahian at memphis.edu>:
>>
>>> Hi All,
>>>
>>>
>>>
>>> I have a “.mat” file which contais: <8x10350000 double> and sampling
>>> rate.
>>>
>>> How should I import this data to field trip? By using   [data] =
>>> ft_preprocessing( cfg);
>>>
>>>   I am getting an error that the data should be in the format of raw or
>>> raw + comp.
>>>
>>>
>>>
>>> Any idea?
>>>
>>>
>>>
>>> Thanks!
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> fieldtrip mailing list
>>> fieldtrip at donders.ru.nl
>>> https://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>>>
>>
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>
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